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Backpacking Sleeping Bag 50° Trek500
Sleeping bag can be paired with the "ultralight" 2017 and "light" 2018 range. Wide T° range: 50 to 68°F for improved comfort thanks to 2 x 3/4 zippers with double slider for heat management.
Free shipping over $49
Final Sale: No returns or exchanges
See our return rules
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features

Optimal temperature
Comfort temperature rating 50°F / Limit temperature rating 41°F
Easy to transport
In size L: weighs 2.1 lbs. Volume 7 liters. Stuff bag.
Sleeping comfort
Very comfortable mummy shape. 2 x 3/4 zippers with 2-way slide to ventilate.
Compatibility
Can be twinned with other models from the "Ultralight" 2017 & "light" 2018 range
Water repellent
Water-repellent fabric to optimize the thermal performance of your bag.
Questions & Answers
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Product Customer Reviews

Great sleeping bag, my daughter loves it and it is the perfect size for her being 10 A little bit synthetic field to the inner, I would recommend a cotton liner with this one
Very good sleeping bag - used it many time for use in un-heated buildings/shelters in the summer and its perfect! The dual zip is a nice touch!
Invest in a liner And a bivvy outer bag And you’ll be sorted What ever they weather in the uk is And even throw on your base layer If needed
Compact size really warm
Warm cosy sleeping bag. Great for adults and children.
Really comfy sleeping bag.
Good to find a warm sleeping bag even in 7 Celsius degree in top of Mount Prau, Dieng. Thanks to Decathlon to make my sleep on a mountain more relaxing and comfortable
Satisfied with the quality
Not comfortable
Reasonable Price and everything’s good about it
it is very good product my hight is 5 '8 it suits my hight.The sleeping bag is slimer so sometimes i face difficulties while sleeping. Anyway am happy with the product
Good sleeping bag if you're looking for a light yet warm sleeping bag.
Good product
Used it on Mt. Pulag, kept me warm on the stormy night in camp 2.
Lze spojit s druhým spacákem.
Additional Product Information
Composition
Padding
- 100% Polyester cationic
Lining
- 100% Polyester cationic
Outer fabric
- 100% Polyester cationic
Carry bag
- 100% Polyester cationic
User temperature
On all of our sleeping bags, we display the comfort temperatures tested by an independent laboratory (AITEX) according to European standard NF ISO 23537 - 2017. The temperature rating is the lower limit at which the user is generally in thermal equilibrium and feels neither too cold nor too hot in a relaxed pose (for a standard woman and in normal conditions of use). Choose your sleeping bag according to the latter.
What are the "limit" temperatures of use?
Limit temperature: temperature at which the user huddled up in the sleeping bag is generally in thermal equilibrium and feels neither too cold nor too hot (defined for a standard man under normal conditions of use).
However, what you need to know about temperatures
A sleeping bag does not generate warmth but retains the warmth produced by the body. If you feel tired and cold and slip into a cold and damp sleeping bag, you are likely to feel cold, however good it is! These temperatures therefore depend on the person's resistance to the cold (bulk, fatigue, etc.), their equipment (mattress that insulates from the cold, etc.), their clothing (naked, underwear, etc.) and the weather conditions (humidity, wind, etc.).
For greater comfort before sliding into your sleeping bag
Dress simply (just 1 layer of clothing is enough). Keep your head, hands and feet warm: hats, gloves, socks, hand or feet warmers, rubdown, etc. A bottle full of hot water can be used as a hot water bottle (as long as it will not open accidentally!) Contract your muscles (70% of the energy consumed is transformed into heat). However you should do this without moving as this can cause drafts of cold air. Use a liner sheet, ideally made of silk, to optimize the warmth inside your sleeping bag.
Shape:
"Generous" mummy shape: wide at the shoulders and more narrow at the feet to optimize thermal insulation (no heat loss) and compact size, while retaining some freedom of movement. Width at shoulder height 30.1" and at feet height 12.6" in size L. Ergonomic hood with drawstring. 2 side zippers with double sliders, lined with a flap (sausage-shaped) made of insulating padding (thermal bridges) and side openings.
Weight and dimensions
Size M 2 lbs, user up to 5'7". Dimensions folded: H 13" Ø 6.3". Volume 6 liters. Size L 2.1 lbs, user between 5'7" and 6'1". Dimensions folded: H 13" Ø 6.7". Volume 7 liters. Size XL 2.3 lbs, user between 6'1" and 6'7". Dimensions folded: H 13" Ø 7.1". Volume 8 liters. Try your sleeping bag before buying it to choose the right size to ensure your comfort.
Guarantee
This sleeping bag is guaranteed for a period of 5 years from the date of sale indicated on the receipt. The product covered by the warranty will be repaired or exchanged free of charge. The warranty covers the defects of your sleeping bag apart from those resulting from normal wear and tear and improper use. This special 5-year warranty will only be granted upon presentation of the product and sales receipt.
Origin
Imported
Storage instructions
Easily store your bag by stuffing it in its bag, feet end first. To maintain its fill power, which is what provides the thermal insulation, remove the bag and store it flat in a dry place.
Superior quality. Unbeatable prices.
For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.
Decathlon makes the difference
-
Research and development
delivers high-quality cost-effective products
-
State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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Minimal retail footprint
lowers overhead and indirect costs

Backpacking Sleeping Bag 50° Trek500
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
